GENERAL DESCRIPTION
The ADL5519 is a dual-demodulating logarithmic amplifier, using the AD8317 core. It has the capability of accurately converting an RF input signal to a corresponding decibel-scaled output. The ADL5519 provides accurately scaled, independent, logarithmic outputs of both RF measurement channels. Difference output ports, which measure the difference between the two channels, are also available. The on-chip channel matching makes the log-amp channel difference outputs extremely stable with temperature and process variations. The device also includes a useful temperature sensor with an accurately scaled voltage proportional to temperature, specified over the device operating temperature range.

FEATURES
   Wide bandwidth: 1 MHz to 10 GHz
   Dual-channel and channel difference outputs ports
   Integrated accurately scaled temperature sensor
   50 dB dynamic range up to 8 GHz
   Stability over temperature ±0.5 dB
   Low noise measurement/controller output VOUT
   Pulse response time: 8/10 ns (fall/rise)
   Small footprint 5 mm x 5 mm LFCSP package
   Supply operation: 3.0 V to 5.5 V @ 65 mA
   Fabricated using high speed SiGe process

APPLICATIONS
   RF transmitter PA setpoint control and level monitoring
   Power monitoring in radiolink transmitters
   RSSI measurement in base stations, WLAN, WiMAX, radar
   Antenna VSWR monitor
   Dual-channel wireless infrastructure radios